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© 2026 SHAYA LOWENSTEIN · LYON STAHL INVESTMENT REAL ESTATE830 S PACIFIC COAST HWY, SUITE D-200, EL SEGUNDO, CA 90245SHAYA@LYONSTAHL.COM · DRE #01942326
BUILDINGS/309 W ALLEN AVE
/// BUILDING FILE · ROLL 2025

309 W ALLEN AVE.

San Dimas, CA 91773 · APN 8392-016-008

/// WHERE DO WE REACH YOU?

ONE EMAIL, USED TO KEEP THIS LIST AND TO TELL YOU IF A WATCHED BUILDING LISTS OR SELLS. UNSUBSCRIBE ANY TIME.

UNITS

5

BUILDING SF

4,224

SF / UNIT

845

YEAR BUILT

1955

BEDROOMS

10

BATHROOMS

5

USE · CODE 0500

5+ UNITS

/// ASSESSED VALUE
LAND$1,407,161
IMPROVEMENTS$946,044
TOTAL$2,353,205
LAND BASE YEAR2021
OWNERSHIP TENUREAPPROX. 5 YEARS

PROP 13 ASSESSED VALUES — USUALLY WELL BELOW MARKET ON LONG-HELD BUILDINGS.

/// LAST TRANSFER
RECORDEDJAN 20, 2021
EST. PRICE (2021)$2,173,998
EST. $/UNIT$434,800

PRICE ESTIMATED FROM ASSESSOR REASSESSMENT AT SALE — NOT A VERIFIED CLOSING PRICE.

/// RENT CONTROL

LIKELY UNDER AB 1482 STATE CAP (5% + CPI, MAX 10%)

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year.

AB 1482 VS RSO →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 91773

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
301 W 1ST ST→OCT 2024EST.$900,000$450,000UNITS2232 W 3RD ST→JUL 2024EST.$1,061,500$530,750UNITS2133 W GLADSTONE ST→JUN 2024EST.$800,000$400,000UNITS2245 W 2ND ST→MAY 2024EST.$1,080,000$540,000UNITS2914 SEDONA CT→DEC 2023EST.$900,000$450,000UNITS2249 S ACACIA ST→SEP 2023EST.$19,940,000$398,800UNITS50201 W 3RD ST→AUG 2023EST.$1,315,000$657,500UNITS2141 E 1ST ST→MAY 2023EST.$1,050,000$262,500UNITS4

PRICES ESTIMATED FROM ASSESSOR REASSESSMENT AT SALE (ASSESSED VALUE DEFLATED 2%/YR) — NOT VERIFIED CLOSING PRICES.

/// COMPARE

Buildings like this one.

ON W ALLEN AVE · ZIP 91773

226 W ALLEN AVE→2 UNITS · BUILT 1925 · DUPLEX426 W ALLEN AVE→2 UNITS · BUILT 1926 · DUPLEX

SIMILAR SIZE AND ERA IN 91773

131 E BASELINE RD→8 UNITS · BUILT 1963 · 6,100 SF200 W 3RD ST→5 UNITS · BUILT 1952 · 3,892 SF213 W 4TH ST→8 UNITS · BUILT 1962 · 6,200 SF413 N ACACIA ST→6 UNITS · BUILT 1940 · 3,525 SF415 N MONTE VISTA AVE→8 UNITS · BUILT 1964 · 8,356 SF753 PALOMARES AVE→7 UNITS · BUILT 1956 · 10,648 SF
EVERY BUILDING IN 91773 →
/// COMMON QUESTIONS · 309 W ALLEN AVE

The short answers.

Is 309 W Allen Ave rent controlled?

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year. This is an inference from public assessor records, not a determination — confirm the certificate of occupancy date with the LA Housing Department or ZIMAS before you rely on it for pricing or notices.

How many units does 309 W Allen Ave have?

County records list 5 units at 309 W Allen Ave, classified as 5+ units across 4,224 square feet of building area, averaging about 845 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 309 W Allen Ave built?

The assessor roll gives a build year of 1955, which puts it in the pre-1979 stock that the LA Rent Stabilization Ordinance generally covers inside city limits. Age drives more than character here: it sets rent-cap exposure, seismic retrofit obligations, and what a lender will underwrite.

When did 309 W Allen Ave last sell, and for how much?

The last recorded transfer was January 2021, at an estimated $2,173,998 — about $434,800 per unit. That price is estimated from the Proposition 13 reassessment recorded at sale, not a verified closing price, so treat it as a close approximation rather than a confirmed figure.

What is 309 W Allen Ave assessed at, and is that what it is worth?

The current assessed value is $2,353,205 ($1,407,161 land, $946,044 improvements). Assessed value is not market value. Under Proposition 13 it resets only on a change of ownership and then climbs about 2% a year, so a long-held building is often assessed far below what it would trade for.

How do I find out what 309 W Allen Ave would sell for today?

Public records give you the frame — units, size, age, assessed value, when it last traded — but pricing needs in-place rents, expenses, and the condition of the units, none of which appear in county data. A broker valuation puts closed comps and a rent survey against the actual rent roll. Shaya Lowenstein does that free for LA multifamily owners, typically within 48 hours, with no obligation to list.

/// OWNER READING
WHAT IS MY BUILDING WORTH? →SELLING WITH TENANTS IN PLACE →HOW LA RSO WORKS →

Own this building?

FREE, CONFIDENTIAL VALUATION FROM CLOSED COMPS — 48H TURNAROUND.

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